Hi,

When trying to upgrade an XtraDB Cluster node from 5.5.24-23.6-log
to 5.5.27-23.6-log, the mysql_upgrade step is getting stuck at "checking
permissions" for "CREATE TABLE IF NOT EXISTS help_topic ...."

Upgrade steps are as follows, using a tarball install:

service mysql stop
cd /usr/local
rm mysql (removes soft link to version 5.5.24)
tar -zxvf Percona-XtraDB-Cluster-5.5.27-23.6.356.Linux.x86_64.tar.gz
ln -s Percona-XtraDB-Cluster-5.5.27-23.6.356.Linux.x86_64 mysql
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
/usr/local/mysql/bin/mysqld --skip-grant-tables --user=mysql &
/usr/local/mysql/bin/mysql_upgrade

| 67072 | dbadm       | localhost | mysql | Query   |    350 | checking
permissions | CREATE TABLE IF NOT EXISTS help_topic ( help_topic_id int
unsigned not null, name char(64) not null, |

Has anyone run into this before in trying to upgrade XtraDB Cluster?

Thanks
Patrick

Thanks Alexy - --wsrep_provider=none did the trick.

Patrick